Intellectual Property India Publishes Patent Application for Retardation Film, Elliptically Polarizing Plate, And Organic El Display Device

MUMBAI, India, July 31 -- Intellectual Property India has published a patent application (202647088259 A) filed by Dai Nippon Printing Co. , Ltd. on July 20, 2026, for Retardation Film, Elliptically Polarizing Plate, And Organic El Display Device.

Inventors include Hiruma Yusuke; Sutou Takanori; Takahashi Terutaka; Otsu Moeko; and Suzuki Kaita.

The application for the patent was published on July 24, 2026, under issue no. 30/2026.

Abstract: This retardation film comprises a laminate including a first retardation layer and a second retardation layer overlapping the first retardation layer. Ny1 Nx1 Nz1 is established where: Nx1 represents the refractive index of the first retardation layer in a direction in which the in-plane slow axis of ...